Updates

app.py

@@ -38,11 +38,11 @@ def generate_pdf_report():
     pdf.set_font("Arial", style='B', size=18)
     
     # Title of the report
-    pdf.cell(0, 10, txt="Magic Math Quiz", ln=True, align="C")
+    pdf.cell(0, 10, txt="Magic Math Quiz!", ln=True, align="C")
     pdf.ln(5)
     
     # Load the image from the URL, scaled down and centered
-    pdf.image("https://huggingface.co/spaces/tofighi/math/resolve/main/assets/gt.png", x=(210 - 25) / 2, w=25, link="https://ghassem.com")  # Centered horizontally and scaled down
+    pdf.image("assets/gt.png", x=(210 - 25) / 2, w=25, link="https://ghassem.com")  # Centered horizontally and scaled down
     pdf.ln(10)
 
     for i, entry in enumerate(st.session_state.questions):
@@ -151,7 +151,7 @@ modules = load_modules()
 st.sidebar.markdown(
     """
     <div style='background-color: white; padding: 10px; border-radius: 10px; text-align: center; color: black;'>
-    <h1 style='margin: 0;'>🪄 Magic Math Quiz<sup>Beta</sup>!</h1>
+    <h1 style='margin: 0;'>🪄 Magic Math Quiz!<sup>Beta</sup></h1>
     <a href="https://ghassem.com" target="_blank">
         <img src="https://huggingface.co/spaces/tofighi/math/resolve/main/assets/gt.png" alt="Logo" style="width:50%; margin-top: 10px;">
     </a>

modules/{numbering_system → number_system}/config.py

@@ -1,3 +1,3 @@
-title = "Numbering System"
+title = "Number System"
 description = "This category covers various operations and concepts in different numbering systems, including binary, octal, decimal, and hexadecimal."
 order=10

modules/{numbering_system → number_system}/valid_invalid_numbers.py

@@ -1,4 +1,4 @@
-# modules/valid_invalid_numbers.py
+# modules/number_system/valid_invalid_numbers.py
 
 title = "Validity of Numbers in Bases"
 description = "This module helps determine the validity of numbers in different bases like binary, octal, decimal, and hexadecimal."
@@ -10,15 +10,28 @@ def generate_question():
     length = random.randint(3, 5)
     
     def generate_valid_number():
-        return ''.join([str(random.randint(0, base - 1)) for _ in range(length)])
+        if base == 16:
+            valid_digits = '0123456789ABCDEF'
+        else:
+            valid_digits = ''.join([str(i) for i in range(base)])
+        return ''.join([random.choice(valid_digits) for _ in range(length)])
     
     def generate_invalid_number():
-        valid_digits = ''.join([str(random.randint(0, base - 1)) for _ in range(length - 1)])
-        if base < 10:
-            invalid_digit = str(random.randint(base, 9))  # For bases < 10, pick an invalid digit from [base, 9]
+        if base == 16:
+            valid_digits = '0123456789ABCDEF'
+            invalid_digit = random.choice('GHIJKLMNOPQRSTUVWXYZ')
         else:
-            invalid_digit = random.choice('ABCDEF')  # For bases >= 10, pick a hex digit to make it invalid
-        return valid_digits + invalid_digit
+            valid_digits = ''.join([str(i) for i in range(base)])
+            if base < 10:
+                invalid_digit = str(random.randint(base, 9))  # For bases < 10, pick an invalid digit from [base, 9]
+            else:
+                invalid_digit = random.choice('GHIJKLMNOPQRSTUVWXYZ')
+        
+        # Replace a random digit in a valid number with an invalid digit
+        valid_number = list(generate_valid_number())
+        replace_index = random.randint(0, length - 1)
+        valid_number[replace_index] = invalid_digit
+        return ''.join(valid_number)
 
     correct_answer = generate_invalid_number()
     options = [correct_answer]
@@ -32,7 +45,7 @@ def generate_question():
     random.shuffle(options)
     
     question = f"Which of the following is an invalid number in base {base}?"
-    explanation = f"The number {correct_answer} is invalid in base {base} because it contains a digit outside the range 0-{base-1}."
+    explanation = f"The number {correct_answer} is invalid in base {base} because it contains a digit outside the range allowed for base {base}."
     step_by_step_solution = [
         "Step 1: Identify the valid digits for the base.",
         "Step 2: Check each option to see if it contains any invalid digits.",